zhengruifeng commented on code in PR #42938:
URL: https://github.com/apache/spark/pull/42938#discussion_r1328198653


##########
python/pyspark/sql/tests/connect/test_connect_function.py:
##########
@@ -1821,6 +1821,111 @@ def test_json_functions(self):
             sdf.select(SF.to_json(SF.struct(SF.lit("a"), SF.lit("b")), 
{"mode": "FAILFAST"})),
         )
 
+    def test_xml_functions(self):
+        query = """
+            SELECT * FROM VALUES
+            ('<p><a>1</a></p>', '<p><a>1</a><a>2</a><a>3</a></p>',
+            '<p><a attr="s"><b>5.0</b></a></p>'),
+            ('<p><a>0</a></p>', '<p><a>4</a><a>5</a><a>6</a></p>', '<p><a 
attr="t"></a></p>')
+            AS tab(a, b, c)
+            """
+        # 
+---------------+-------------------------------+---------------------------------+
+        # |              a|                              b|                    
            c|
+        # 
+---------------+-------------------------------+---------------------------------+
+        # |<p><a>1</a></p>|<p><a>1</a><a>2</a><a>3</a></p>|<p><a 
attr="s"><b>5.0</b></a></p>|
+        # |<p><a>1</a></p>|<p><a>4</a><a>5</a><a>6</a></p>|          <p><a 
attr="t"></a></p>|
+        # 
+---------------+-------------------------------+---------------------------------+
+
+        cdf = self.connect.sql(query)
+        sdf = self.spark.sql(query)
+
+        # test from_xml
+        for schema in [
+            "a INT",
+            # StructType([StructField("a", IntegerType())]),
+            # StructType([StructField("a", ArrayType(IntegerType()))]),

Review Comment:
   are they supported? 



##########
python/pyspark/sql/tests/connect/test_connect_function.py:
##########
@@ -1821,6 +1821,111 @@ def test_json_functions(self):
             sdf.select(SF.to_json(SF.struct(SF.lit("a"), SF.lit("b")), 
{"mode": "FAILFAST"})),
         )
 
+    def test_xml_functions(self):
+        query = """
+            SELECT * FROM VALUES
+            ('<p><a>1</a></p>', '<p><a>1</a><a>2</a><a>3</a></p>',
+            '<p><a attr="s"><b>5.0</b></a></p>'),
+            ('<p><a>0</a></p>', '<p><a>4</a><a>5</a><a>6</a></p>', '<p><a 
attr="t"></a></p>')
+            AS tab(a, b, c)
+            """
+        # 
+---------------+-------------------------------+---------------------------------+
+        # |              a|                              b|                    
            c|
+        # 
+---------------+-------------------------------+---------------------------------+
+        # |<p><a>1</a></p>|<p><a>1</a><a>2</a><a>3</a></p>|<p><a 
attr="s"><b>5.0</b></a></p>|
+        # |<p><a>1</a></p>|<p><a>4</a><a>5</a><a>6</a></p>|          <p><a 
attr="t"></a></p>|
+        # 
+---------------+-------------------------------+---------------------------------+
+
+        cdf = self.connect.sql(query)
+        sdf = self.spark.sql(query)
+
+        # test from_xml
+        for schema in [
+            "a INT",
+            # StructType([StructField("a", IntegerType())]),
+            # StructType([StructField("a", ArrayType(IntegerType()))]),
+        ]:
+            self.compare_by_show(
+                cdf.select(CF.from_xml(cdf.a, schema)),
+                sdf.select(SF.from_xml(sdf.a, schema)),
+            )
+            self.compare_by_show(
+                cdf.select(CF.from_xml("a", schema)),
+                sdf.select(SF.from_xml("a", schema)),
+            )
+            self.compare_by_show(
+                cdf.select(CF.from_xml(cdf.a, schema, {"mode": "FAILFAST"})),
+                sdf.select(SF.from_xml(sdf.a, schema, {"mode": "FAILFAST"})),
+            )
+            self.compare_by_show(
+                cdf.select(CF.from_xml("a", schema, {"mode": "FAILFAST"})),
+                sdf.select(SF.from_xml("a", schema, {"mode": "FAILFAST"})),
+            )
+
+        for schema in [
+            "STRUCT<a: ARRAY<INT>>",
+            # StructType([StructField("a", ArrayType(IntegerType()))]),

Review Comment:
   is this supported?



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